7.2.2 PNG (for graphics, transparency)

What it is: PNG (Portable Network Graphics) is another very popular image format, especially for web graphics and logos.
How it works: PNG uses "lossless compression." This means that when you save an image as a PNG, no information is lost, and the image quality remains perfect, no matter how many times you save it.
Best for: Images with sharp lines, blocks of solid color, text, and especially images with transparency. Transparency means parts of the image can be see-through, allowing the background behind it to show through (like a logo that floats over a website background).
Weakness: PNG files are generally larger than JPG files, so they might load slower on websites if not optimized.

Bibliography:

PNG files. (n.d.). Adobe Blog. Retrieved July 11, 2025, from https://www.adobe.com/creativecloud/file-types/image/raster/png-file.html
PNG (n.d.). Computer Hope. Retrieved July 11, 2025, from https://www.computerhope.com/jargon/p/png.htm

Further Reading:

Portable Network Graphics. (n.d.). Wikipedia. Retrieved from https://en.wikipedia.org/wiki/Portable_Network_Graphics